Performance seems to improve considerably by dropping MTU from the default 1500 to 1488. However, this has caused kernel instabilities with Debian Squeeze images (debian6-19-04-2012). It is unknown if this performance benefit is also gained on other images, or if these kernel instabilities have been resolved.

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===Methodology===

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*OpenBSD 5.2 computer with two vlan interfaces in differents rdomains directly connected to raspberry with two vlan interfaces.

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*iperf -s on one interface of the OpenBSD, iperf -t 300 -c on the other, raspberry routing in the middle.